CN109747179A - A kind of pre- immersion composite material - Google Patents
A kind of pre- immersion composite material Download PDFInfo
- Publication number
- CN109747179A CN109747179A CN201711080556.6A CN201711080556A CN109747179A CN 109747179 A CN109747179 A CN 109747179A CN 201711080556 A CN201711080556 A CN 201711080556A CN 109747179 A CN109747179 A CN 109747179A
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- China
- Prior art keywords
- protective film
- composite material
- surface protective
- following table
- closely
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Abstract
The invention belongs to technical field of material; it is related to a kind of prepreg mould-pressing composite material moulding process; in order to solve the problems such as composite material surface of existing moulding process preparation is easy to produce pin hole, color difference; the present invention provides a kind of composite material process plannings; the technique at least increases the step of composite material surface adds protective film, at least be able to solve the above problem.
Description
Technical field
The invention belongs to technical field of material, are related to a kind of composite material process planning, molding work of the present invention
Skill at least increases the step of composite material surface adds protective film, to reach the molding purpose of aided composite, this
The composite material is invented to refer generally to be mainly used for article dress with the composite material of prepreg mould pressing process processing procedure, the composite material
Decorations.
Background technique
Prepreg mould pressing process has been widely used, stable with properties of product, resin content is lower, designability
By force, the features such as easy to operate.But the problems such as product after molding, surface is easy to produce pin hole, color difference, appearance is bad, past
Toward needs during post-processing, product is repaired.
Summary of the invention
The technical problem to be solved by the present invention is to the composite material surfaces prepared using existing moulding process to be easy to produce
The problems such as pin hole, color difference, and a kind of composite material process planning is provided for this problem.
The present invention solves the technical problem by following scheme:
A kind of prepreg mould-pressing composite material moulding process, using prepreg fabric as raw material, including composite plys step, with
And the composite material curing molding step including demoulding step, the composite plys step include:
A, prepreg fabric is spread on prepreg fabric, at least makes to fit closely between prepreg fabric；
B, a step is repeated, the laying until completing composite material；
It is characterized in that the composite material process planning further includes the forming step of composite material surface protective film, the step packet
It includes:
With the forming step of the following table surface protective film of composite material bottom surface prepreg fabric laminating:
1., be layered on following table surface protective film on mold bottom surface on one side, make closely to paste between following table surface protective film and mold bottom surface
It closes；
2., composite material bottom surface prepreg fabric is layered on the another side of following table surface protective film, presoak composite material bottom surface
The another side of material fabric and the following table surface protective film fits closely；
With the forming step of the upper surface protective film of composite material top surface prepreg fabric laminating:
(1), being layered on die top on one side by upper surface protective film, fits closely upper surface protective film with die top；
(2), the another side of upper surface protective film is layered on the prepreg fabric of composite material top surface, presoaks composite material top surface
The another side of material fabric and the upper surface protective film fits closely；
The composite material curing molding step includes the steps that opening surface protection film after demoulding step.
Since signified composite material of the invention is ply angles, pin hole, color difference etc. occur at the bottom of composite material
Face and top surface, therefore only need to perform corresponding processing the two faces of composite material, technical staff is according to the normal of this field
Operating method and under the guidance of above-mentioned technical proposal is advised, the molding of composite material, composite material bottom surface and top obtained are completed
Face does not have pin hole, color difference at least:
Mold body for machining composite material can not be processed into absolute plane, and prepreg fabric is also impossible to absolutely flat
Whole is fitted in die surface, certainly exists subtle difference.Due to these subtle differences, cause pressure transmitting uneven,
Cause resin distribution uneven, wherein insufficient pressure, lacking resin will lead to pin hole, and resin distribution unevenly will lead to color
Difference.
Protective film of the present invention has certain thermal expansivity, it is possible to increase pressure to composite material surface, make
Pin hole disappears, and since protective film dimensionally stable is evenly distributed, after expanded by heating, the pressure applied to each section is also more uniform, makes
Resin distribution is also more uniform, the problem of avoiding color difference.
Specific embodiment
The Summary of this specification merely illustrates main technical schemes of the invention, but in order to obtain preferably
Composite material, it is also necessary on the basis of the main technical schemes, be completed in conjunction with other technical solutions of the invention, this tool
Body embodiment thus will be to the detailed introduction present invention of technical staff.
A kind of prepreg mould-pressing composite material moulding process, using prepreg fabric as raw material, including composite plys step
Suddenly, the forming step of composite material surface protective film and the composite material curing molding step including demoulding step, composite wood
Expect to complete as laying step 1 by following two step:
1, prepreg fabric is spread on prepreg fabric, at least makes to fit closely between prepreg fabric；
2,1 step is repeated, the laying until completing composite material.
Make to fit closely between prepreg fabric to be at least up to 1 step, it is common practice to need to be pre- with roller
Leaching material cloth compacting flattens or by hand smoothes out with the fingers prepreg cloth flat, cannot remain bubble,
By above-mentioned two step, the composite material of technical staff available one uncured demoulding processing, in order to solve this hair
Bright technical problem to be solved (is easy to produce pin hole, color difference etc. using composite material surface prepared by existing moulding process
Problem), in due course, preparation (namely the composite material surface protective film of composite material surface protective film can be carried out
Forming step).Correspondingly, the composite material curing molding step includes opening surface protection film after demoulding step
The step of, to remove surface protection film after the completion of prepared by composite material.
The final protective film needs be coated with the bottom surface of composite material and top surface (due to can be detailed in summary of the invention portion
The introduction divided), so the forming step of the protective film can be divided into the following table with composite material bottom surface prepreg fabric laminating
The forming step of surface protective film and forming step with the upper surface protective film of composite material top surface prepreg fabric laminating.Such as
Fruit is located at the protective film (being respectively corresponding upper surface protective film and following table surface protective film) of composite material bottom surface and top surface
Structure having the same, then the forming step of above two surface protection film can be consistent, such as specific real for this
For applying mode, the upper surface protective film and following table surface protective film are simple layer (not being multilayered structures), therefore, under described
The forming step of surface protection film may is that
I, be layered on following table surface protective film on mold bottom surface on one side makes closely to paste between following table surface protective film and mold bottom surface
It closes；
II, composite material bottom surface prepreg fabric is layered on the another side of following table surface protective film, presoaks composite material bottom surface
The another side of material fabric and the following table surface protective film fits closely.
The forming step of the upper surface protective film is similar with the forming step of following table surface protective film, specifically are as follows:
I, be layered on upper surface protective film on die top on one side fits closely upper surface protective film with die top；
Ii, the another side of upper surface protective film is layered on the prepreg fabric of composite material top surface, presoaks composite material top surface
The another side of material fabric and the upper surface protective film fits closely.
Reach the usual way fitted closely be need to be fitted closely with roller object compacting flatten or by hand need to closely
Fitting object is smoothed out with the fingers flat, cannot remain bubble.
In general, unlike composite material curing molding step must be arranged in the formation step of composite material surface protective film
Rapid and composite material is paved into the same, forming step and the composite plys step of composite material surface protective film after step
There is no specific chronological orders for starting, in fact, the successive arrangement of above-mentioned two step will not give final composite wood
The preparation of material brings different influence.
However, present embodiment discovery is using above every technical solution, there is no solve composition composite material
The problem of prepreg fabric slides during laying or curing molding, in order to smoothly solve the above problems, usually multiple
Corresponding block is arranged in the side (except composite material bottom surface and each face of top surface) of condensation material.And using the corresponding block of setting
After measure, forming step and the composite plys step of composite material surface protective film are preferably able to certain successive suitable
Sequence.
For example, the prepreg fabric that a technical solution master is to solve composite material occurs during curing molding
The forming step of block, the forming step of the block is arranged in the problem of sliding, the technical solution between I step and II step
It may is that
Block is set on following table surface protective film, so that following table surface protective film and block be made to form a cavity, the sky of the cavity
Chamber matches with the shape size of composite material after finishing, and the another side of following table surface protective film described in II step is the cavity
Bottom surface.
The block forming step of the technical solution, which is ultimately formed one, just to accommodate the cavity of composite material, and answers
The laying step (including 1 and 2 steps) of condensation material is completed in advance, then to the side of composite material between 2 steps and II step
Edge is modified, and in this way when completing II step, entire composite material can be made just to be put into the cavity of block forming step,
It can guarantee the problem of prepreg fabric slides do not occur in subsequent curing molding step.
Claims (1)
1. a kind of material immersing type moulding material, using prepreg fabric as raw material, including composite plys step, composite material surface
The forming step of protective film and composite material curing molding step including demoulding step are led to as composite plys step 1
Following two steps are crossed to complete:
I, be layered on following table surface protective film on mold bottom surface on one side makes closely to paste between following table surface protective film and mold bottom surface
It closes；
II, composite material bottom surface prepreg fabric is layered on the another side of following table surface protective film, presoaks composite material bottom surface
The another side of material fabric and the following table surface protective film fits closely；
The forming step of the upper surface protective film is similar with the forming step of following table surface protective film, specifically are as follows:
I, be layered on upper surface protective film on die top on one side fits closely upper surface protective film with die top；
Ii, the another side of upper surface protective film is layered on the prepreg fabric of composite material top surface, presoaks composite material top surface
The another side of material fabric and the upper surface protective film fits closely；
Reaching the usual way fitted closely is that need to fit closely object compacting with roller to flatten or need to fit closely by hand
Object is smoothed out with the fingers flat, cannot remain bubble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080556.6A CN109747179A (en) | 2017-11-06 | 2017-11-06 | A kind of pre- immersion composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080556.6A CN109747179A (en) | 2017-11-06 | 2017-11-06 | A kind of pre- immersion composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109747179A true CN109747179A (en) | 2019-05-14 |
Family
ID=66400354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711080556.6A Pending CN109747179A (en) | 2017-11-06 | 2017-11-06 | A kind of pre- immersion composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109747179A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110774623A (en) * | 2019-10-30 | 2020-02-11 | 武汉格罗夫氢能汽车有限公司 | Manufacturing method of simple-modeling carbon fiber composite part of hydrogen energy automobile |
| CN112223784A (en) * | 2020-09-25 | 2021-01-15 | 上海市富力达科技股份有限公司 | Carbon fiber epoxy resin sheet and preparation method thereof |
-
2017
- 2017-11-06 CN CN201711080556.6A patent/CN109747179A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110774623A (en) * | 2019-10-30 | 2020-02-11 | 武汉格罗夫氢能汽车有限公司 | Manufacturing method of simple-modeling carbon fiber composite part of hydrogen energy automobile |
| CN112223784A (en) * | 2020-09-25 | 2021-01-15 | 上海市富力达科技股份有限公司 | Carbon fiber epoxy resin sheet and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190514 |